DE1071657B - Device for dry coke cooling - Google Patents

Description

The invention relates to a device for dry cooling of coke.

Various types of devices are used for dry coke cooling, in which the goods to be cooled are passed through a cooling chamber with the aid of discharge devices. It has now been shown that both the shape of the cooling space and the manner in which the coke is passed through the space has a greater or lesser influence on the cooling process and the nature of the goods being cooled. For example, cold rooms with sloping cold room walls or the inclined arrangement of the discharge devices as the bottom of the cooling chamber are known. If the floor is now designed as an inclined, non-moving grate, such as a step grate, it must be kept relatively steep so that continuous sliding is possible. In this case, however, the deficiency arises that considerable abrasion of the coke occurs. But even where mechanically driven gratings are used for discharging of the goods is still considerable abrasion vm a, which is more so, is arranged per the flatter or more strongly against the discharge direction of increasing the grate. as is the case with a known facility. Grates that are not moving are also less suitable because they cannot cope with the thermal stresses to the same extent as, for example, B. a traveling grate.

But the strong one also works with traveling grids as discharge systems for cooling devices Heat demand is still noticeable in a rather disadvantageous manner. This is mainly due to the fact that the glowing coke lies in a very thin layer over the food. In contrast, the thermal stress is significantly more favorable if the cooling space is larger Height and the coke lies in large layers on the grate. Since the cooling medium! through the grate is initiated, only those who have cooled down the furthest come Pieces of coke in contact with the grate, while the glowing coke forms the top layer in the cooling chamber forms.

The invention is based on this knowledge and therefore uses a cooling chamber over whose Rosti there is a high layer of coke.

The higher coke layer, however, results in an increased one Pressure on the lower parts of the coke, which makes the formation of abrasion less favorable.

The invention is now aimed at such devices In addition to a trouble-free passage through the cooling chamber before alk'm, the greatest possible reduction in abrasion to reach.

The reason is that as a cooling chamber lirwliu! i-iii! iliw-irKfnriliM-nrlcr traveling grate used

Device for dry coke cooling

Applicant:

L. & C. Steinmüller GmbH,
Gummersbach (RhId.)

corresponds to the traveling grate. Dk inclination can be set up adjustable. z. B. in that the grate is rotatably mounted at its feed end and is designed in terms of length. that its discharge end can be raised or lowered within the cooling space, the cooling space being designed so that the grate distance from the wall does not change during the pivoting movement.
The measures according to the invention make it possible to limit the abrasion to a minimum, since the grate movement is parallel to the natural tendency of the coke to move. This effect is supported by the further feature of the invention, according to which the rotating grate belt with at a distance of several, z. B. about five grate bar lengths from each other arranged drivers - advantageously in the form of raised grate bars going out from the grate level, which extend over the entire grate width - should be equipped. Furthermore, the walls of the cooling space should be arranged at an incline, so that the space is widened conically downwards. According to the invention, it is to be regarded as particularly advantageous if the cooling surfaces lying parallel to the direction of rotation of the mechanical grate diverge too conically at least in their lower part after the end of the grate. These measures relieve the lower coke layers and ensure that the coke column sinks and discharges smoothly from the cooling space. In the latter case, of course, it is no longer possible to adjust the rust inclination.

Another measure that has a beneficial effect on the cooling process, especially to reduce the Abrasion is to be found in it according to the invention. that at least the front wall of the room can be seen in this way inclines that it has the effect of a prolonged Aufgaberanipc, which is approximately straight to the cold room floor leads, the wall being slightly stronger than

Claims (6)

Exemplary embodiments of the invention are shown in the drawing. Fig. 1 shows a cooling chamber with a traveling grate forming an inclined floor surface; Fig. 2 shows, reduced in size and on a bar, a conical, downwardly widened cooling chamber and Fig. 3 shows section AA according to Fig. 2. The glowing coke, taken from a coking chamber, is fed into the feed lock 2 after a sand or wet seal 1 has been removed, which is closed to the cooling space 3 by a cooled slide 4. After the closure 1 has been closed, the slide 4 is actuated and the coke arrives in the cooling space 3 on the coke which is already located here on the zone underwind wander grate 5 and which has already been partially cooled. The cooling medium passing through the coke layer heats up and exits at 6 from the cooling space 3 in order to be sent to a heat exchanger, not shown, e.g. B. a waste heat boiler to flow, to cool in this and back into the underwind zones of the grate 5 and thus the cooling space 3 to enter. The coke that has cooled down the furthest is of course on the grate surface and is continuously discharged through the traveling grate 5 at 7 into the collecting funnel 8. This collecting funnel 8 is closed by a shut-off device 9 which is opened from time to time so that the cooled coke can get into the lock 10. The cellular wheel 11 or the like located at the outlet of the lock 10 allows the cooled coke to pass onto a conveyor belt 12 or another suitable transport device. The raised areas marked 5a in the grate band 5b of the grate 5 are intended to indicate that individual rows of grate bars should be provided with drivers protruding beyond the grate plane. These raised rows of grate bars 5a make it easier for the coke to be carried along. The walls 13 to 16 of the cooling space 3 are inclined so that the cooling space is conical towards the zone underwind traveling grate 5 Expansion of the cooling chamber directed towards the end of the grate. In Fig. 2, the shape of the cooling space is indicated by dashed lines with an inclined front wall 13. Patent claims: 1. Device for dry coke cooling, consisting of a through-step of the coke Cold room with sloping walls, the bottom of which is arranged at an incline Traveling grate is formed through which the Cooling gases are supplied to the goods to be cooled, characterized in that the slope of the downward promoting traveling grate (5) corresponds to the slip angle of the coke. 2. Device according to claim 1, characterized in that the inclination of the grate (5) is adjustable by swiveling around its end of the task. 3. A device according to claim !, characterized in that the circumferential grate belt (5 b) at a distance of several grate bars from one another over the grate surface protruding, the entire grate width occupying drivers (5 c). 4. Device according to claim 1, characterized in that in a known manner the The cooling space (3) is widened conically downwards. 5. Device according to claim 1 or 4, characterized in that the side walls (13 to 16) of the cooling chamber (3) diverge too conically after the end of the grate. 6. Device according to claim 1 and 4, characterized in that the inclination of the known Way inclined and acting as an extended loading ramp cooling chamber front wall (13) is stronger than that which the traveling grate (5) has. Considered publications:
German patent specifications No. 492 943, 421 838,
391749; Austrian Patent No. 119 482;
British Patent No. 211,298;
Swiss Patent No. 297 335. 1 sheet of drawings